Analysis of capabilities to achieve overlapped apertures by using a multi-feed ebg structure loaded by passive filtering functions

Hassan Chreim (1) , Régis Chantalat (1) , Marc Thevenot (1) , Umair Naeem (1, 2) , Stéphane Bila (2) , Serge Verdeyme (2) , Thierry Monédière (1) , Patrick Dumon (3) , Baptiste Palacin (3) , Hubert Diez (3) , Damien Pacaud (4) , Yann Cailloce (4) , Gérard Caille (4)

1 OSA
2 MINACOM
3 CNES - Centre National d'Études Spatiales [Toulouse]
4 TAS - Thales Alenia Space [Toulouse]

This paper presents an analysis of different multi-feed EBG solutions, in order to choose the best one which provides overlapped apertures and promises good functioning as a reflector focal array. Two main structures will be studied: the matched and unmatched antenna. Both structures present different kinds of interference and coupling between feeds which disturb the performances of the antenna, especially the radiation. That is why suited filtering functions for each solution will be studied in order to isolate feeds and reconstruct the disturbed radiation. The investigation of all structures and their required filtering functions will lead us to the final promising solution which is the matched multi-feed EBG antenna.

Mots clés: Antenna feeds; Apertures; Filtering; Frequency; Metamaterials; Passive filters; Periodic structures; Polarization; Reflector antennas; Satellite antennas

Domaines: Electronique; Optique / photonique

Hassan Chreim, Régis Chantalat, Marc Thevenot, Umair Naeem, Stéphane Bila, et al.. Analysis of capabilities to achieve overlapped apertures by using a multi-feed ebg structure loaded by passive filtering functions. 4th European Conference on Antennas and Propagation, EuCAP 2010, European Association on Antennas and Propagation (EurAAP), Apr 2010, Barcelone, Spain. pp.978-847653472-4. ⟨hal-00620434⟩